Door-jamb setter.



F. SCELZA.

DOOR JAMB SETTER.

APPLICATION FILED APR. 15, 1911.

1,017,81 1 Patented Feb. 20, 1912.

2 SHEETS-SHEET 1.

INVENTOR fil mm F. SGELZA.

DOOR JAMB SETTBR.

AYP'LIoATIon FILED APR.15, 1911.

Patented Feb. 20, 1912.

R O T. N E V W.

2 SHEETS-SHEET z.

51 Alf/07m WITNESSES:

" UNITED, srkrns rATEN r OFFICE.

FRANK SCELZA, OF HARRISON, YORK.

\DOOR-JAMB snrrna.

Specification of Letters Patent.

Application filed April 15, 1911. Serial No. 621,424.

Patented Feb. 20, 1912 abling workmen to level up'the door-jambs,

to locate thereon the position of the hingemortises, and by means. of guides to out said mortises rapidly and accurately.

The subject matter of this application forms an improvement on my door-jamb setter, described and. claimed in my U. S. application, Serial No. 587,091, of Octobe 14, 1910.

To carry out'my invention I construct a frame adapted to fit within the door jamb and extensible longitudinally and laterally. I provide, moreover, recesses in said frame, and adjustable guides located within said recesses for guiding the tools used in cutt-ing the mort-ises.

In-the drawings accompanying and forming part of this application Figure l is an elevation showing the frame adjusted in the door-jamb; Fig. 2 is a section o-nthe line 22 of Fig. 1; 'Fig. 3 is a partial section on line 33 of Fig, 1; Fig. 4 is an elevation of the brace of which Fig. 3 is a section; Fig. 5 shows a section on the line 5 5 of Fig.

,1, and Fig. 6 is a perspect-iveview of one of the recesses in the frame with the adjustable tool guides in position on the face and 'edge of the door-jamb.

Referring to the drawings, A A are the parts of the setter extensible upon each other by means of the slot a. and the setnut a B B are extensible stifi'ening braces connecting the two parallel sides of the setter frame; B is an auxiliary brace used when an extra heavy setter is to be reinforced; C are the calibrated tool guides comprising, preferably, two arms at right angles to each other each capable. of longitudinal extension; E is an extra brace piece connecting the setter frame A and the doorjamb J. Near the top and bottom of the extensible frame bars A A on the outer edge where they come in contact with the sides of the door-jamb, there are located the .recesses a which are cut deep enough to receive the tool guides and long enough to enable the hinge mortisesto be cut to the desired length of hinge. The inner edge of each of'the recesses a is preferably beveled to admit more light to the work, andis provided with a scale.

a are slots out fromthe inner edge a of the setter frame through to the recesses 0?,

said slots serving to transmit light to therecesses a and as guides for the clamp screws an, enabling the tool guides C to be set when adjusted longitudinally within the recess a Each tool guide has a pair of jaws a'2y which receive the side barand between which the clamp screw a is screwed into the tool guide. The clamp screws engage holes inthe tool guides b are slotted tool guides, hung upon pins 5 adjustably mounted in theshorter arm Z2 of the tool guides C.

b 'is a slotted tool guide hung upon pins b of the guide arm 6 b are set screws for holding the tool guides b and 6 against lateral movement when they have been adjusted.

b are set screws for holding the tool guides b and b on their frames.

The extensible cross braces B B are attached to the inner edges of thesetter frame, serving to reinforce the same, and are provided with levels a for leveling up the frame adjusted .by screws (1. Across the middle of the setter frame there is arranged also an adjustable auxiliary stiffening brace B provided with a notch b in which the parts of frame A A slide longitudinally, said brace being removably attached to the 'door-jamb J. The angle brace piece E is nary thickness or extra thick. The slots a in the frame A A serve the double purpose of receiving the set screws 0., and allowing some light to enter the gage portion a a is the beveled edge of the recess a affording a rest for the chiselj The operation is as follows; The tool guides C being introduced into the recesses as shown in Fig. 6, the frame is set and braced within the door-jamb, as seen in Fig. 1. These guides are then adjusted in the slots a by means of the clamp-screws a until there is embraced between the upper and lower tool-guides C a distance equal to the length of hinge mortise to be out. The

tise. The short arms 6 are then extended until the distance of the edge of b from the angle of the guide equals the thickness of the mortise, when a chisel, using 6 as a straight edge, can be applied to remove the required thickness.

In addition to the levels (1 which have been referred to, my frame may also be provided with cross-levels a. which are adjustedupon the frame by screw a.

In cutting the hinge mortise by means of my improved apparatus, I may employ an ordinary chisel. I prefer, however, for cutting thecorners 0 said mortise to use a chisel which has its cutting edge rectangular in cross-section. Both the levels a and a are adjusted by their screws against springs placed between them and the frame.

Having thus, fully described and illustrated my invention, what I claim, is

1. An extensible side bar for door-jamb setting machines, having a recess on itsouter edge, said recess being rovided with beveled edges adapted to orm chisel guides, and a tool ide adjustable in' said recess, said bar being provided with a guide slot extending from the recess to the inner edge of the bar adapted to permit vertical ad- I justment of the tool guide and admit light to the-recess, and means for holding said tool guide in place. 1

2. A device for setting door-jambscomprising a air of parallel, longitudinally extensible s1de bars, adjustable cross braces tensible side bars, adjustable cross braces connecting said bars, in combination with a removable adjustable reinforcing cross brace, connecting the side bars and provided with means for rigidly connecting the .side bars to the door-jamb.

4. An adjustable side bar for door jamb setters having a recess cut in its outer edge, said recess being provided with a scale in combination With a calibrated tool guide adjustable Within the recess.

In Witness whereof, I have hereunto signed my name in the presence of two subscribing witnesses.

, his

FRANK SCELZA. mark Witnesses:

C. W. TATE,

JOSEPH Emma.

rovided also with means for dey 

